Nice job! I think of doing a 980 Ti build as well
I'm thinking doing the same, however where are you going to put the x31? And I don't think that the X31 is even listed as compatible.
You should be really proud of this machine, well done.
However my only question is, if you didn't get a i7 4790K, why are you water cooling your system.
It just a question, and I just wanna know.
Though as I said before really awesome build